Barometer



Sept. 7-, 1926. 1,599,002

J. L. BAUKUS BAROMETER Filed Feb. 26, 1926 Patented Sept. 7, 1926. s

JOHN L. BAUKUS, or

saenmw, MICHIGAN.

' BAROMETER.

' Application filed February 26, 1926. Serial No. 90,885.

The present invention'rela'tes to barometers, and the primary object of the inven tion is to provide a novel instrument 'ofthis character which will be effective in its oper-' ation for judging of the probable changes of weather. A further object of the. invention is to provide a device of this character which is of-simple and ;novel construction,

and one wherein the-member containing the expansion medium, is supported in a novel manner for permitting of air to clrculate freely about the member.

' A further object of the invention resides :in the novel man'nerin'which the air bulb .containingbulb' of the barometer.

ofthe barometer? is supported upon the fluid Other objects and advantages of the invention will be apparent during the .course' of the following detailed description, taken in connection with the accompanying drawing forming a part of this specification and in which drawing e Figure 1 is a front plan view of a barometer constructed in accordance with my invention. a

Figure 2 is ,a central vertical section through the same. Figure 3 is a fragmentary detailedview illustrating the manner of supporting one member of the barometer upon its companion member. a I Figure 4 is a fragmentary perspective view of the upper end of the tube the fluid containing bulb. In the drawing, and wherein similar reference characters designate corresponding parts throughout the several views, the letter. A may designate a supporting plate, for vertical supporting of the barometer which in the example shown, comprises upper and lower separable companion sections B and C respectively.

The supporting plate A which may be formed of any suitable material, is provided inwardly of its marginal edges with an opening formed with a vertically extending way 10 having an enlarged circular -portion v 11 formed at the upper end thereof and an enlarged. circular portion 12 provided at the lower end thereof; This opening as clearly illustrated in Figure 2, extends through the plate to which is preferably formed of glass, embodies a bulb like head 15 having flattenedportion of front and rear faces 16 and 17 respectively, and from the lower'portion of which bulb a tube 18 extends. The head 15 may be termed an a'ir'bu'lb, whilethe tube 18 may be termed a gauge tube.

f Referring novi tothe lower section C of the barometer, and which isalso formed of glass,'the same embodies a' flui'd biilb 20 havlng flattenedfront and rear" surfaces 21 and 22 respectively, and from the upper portion of which bulb, a stand tube 23 of greater internal diameter than the external diameter of the gauge tube 18 extends. The "upper end of the stand tube 23, is provided with diametrically disposed projections 24; each having a crotch 25 formed in its upper edge and into which crotches the lower portion of f the air bulb 15 rests. When the-sections B and C are in asse1nbled relation, the gauge tube 18 extends-coaxially within the stand ,tubev23 and when the air bulb 15 comes to rest upon the upper end of the stand tube, the lower end of the gauge tube extends into close proximity with the bottom of the fiuid bulb 20 as clearly illustrated in Figure 2. This positioning of the tube"18 within the tube 23, provides a pressure chamber 26 communicating at itslower'end with the bulb 20, and atits upper end, with the atmosphere through the diametrically disposed passageways 271 provided the projections 24.

An expansion medium or indicating fluid .of any preferred character is contained within the bulb 20, and a column of which fluidis adapted to rise or fall within the gauge tube 18 upon varying atmospheric pressures acting upon the fluid inthebtilb 20 through the chamber 26. A suitable scale 30 may be providedon the front face 13 of the supporting plate for determining the weight or pressure "ofthe atmosphere, and hence 'judge the probable change of weather.

The barometer maybe supported in a vertical position within the opening-formed in the supporting 'plate,'-byjijineaiis of transversely extending straps"31wliich span the vertically extending way 10, and have their ends secured to-thejsupporting-plate by suitable fasteningelemnt fiill These straps 31 are preferably disposedfone'at theffront of p the supporting plate, at apoint substantially 10, and two at the rear midway of the way face of the supporting plate at points relatively near each end of" the way 10. These straps 31, and as clearly illustrated in Figure 2, engage the stand tube 23 in a manner for rigidly supporting the tube in a vertical position within-the way and out of contact with the side walls of the way, and the fluid bulb 20 in spaced relation to the circular wall of the cut-out portion 12. hen

- bulbs and be of a dimension to lie at least inwardly of'the front and rear faces of the supporting plates for preventing possible damage t'ol the bulbs, and the crotches provided at-the upper end of the stand tube be so disposed that when the faces of the fiuidbulb 20 are in parallel relation 8 with the front and rear faces of the support- 25 ing plate, and the bulb 15 comes to rest withinthe crotches, the seotionfB will be held against relative rotation with respect to the section C, and with the-flattened surfaces and 17 in parallel relation with the frontand rear faces of the supporting plate.

From the foregoing description it will be apparent that a novel type of barometer has been provided embodying a'pair of separable companion sections of relatively like configuration, with one of said sections adapted to telescopically receive a,portion of. the companion section in a manner to serve as a support for thev section. r; .Changesin detail may be made to-the form of invention herein shown and described, without departing from the spirit of the invention or'the scope of the followingclaims. v Iclaimz I 1. A device of the class described comprising a lower section embodying a'bulb. for containing fluid and a vertical stand'tube' having diametrically disposed crotches pro-- videdin its upper end, and an upper section embodying a bulb for containing air resting in said erotches of the, stand tube and having a depending gauge ft ube, extending" downwardly through the stand tube into a :lliqnd contained in the bulb-for containing 2; A device of the class described com y prising a lower section embodying a bulb for containing fluid and provided with a ver tically extending stand tube, and an upper' section embodying a bulb for containing air resting upon the upper end of the stand tube and having :1 depending gauge tube of less external'diameter than the internal diameter of. the stand tube, extending downwardly 3. A device of the class described comprising a lower section. embodying a bulb for containing fluid having diametrically disposed flattened surfaces and a vertically extending stand tube having. diametrically disposed crotches provided in its uppercnd,

and an upper section embodying. a bulb-for containing air and having diametrically disposed flattened surfaces, resting in the" crotches of the stand tube for retaining the flattened surfaces of the respective bulbs in parallel planes, said bulb of the upper'sec-T tion being provided. with'a depending gauge tube extending downwardly through the I stand tube and out of contacting relation withthe inner surface thereof.

4. A device of the class described comprising a lower section. embodying a bulb for containing fluid and a stand tube having projections provided at its upper end, and an upper section embodying a bulb for containing air and a gauge tube of less external diameter than the internaldiameter ofthestand tube, said bulb for containing air to rest upon the projections of the stand tube with the gauge tube extending downwardly through the stand pipe, in-a manner whereby passageways will beprovided at theupper endof the stand tube-through which air may pass into the stand tube for acting upon .a-liquid contained in the bulb of the lower section for causing a rise 'and'fall of a column'of the liquid within the gauge tube. 5. A device ofthe class described compris ing a supporting plate having a vertically extending opening provided therein, a

lower barometer section embodying a bulb fol'bcontaining fluid and ,awwertical stand tube, rigidly secured within the opening of barometer section embodying a bulb for contaming air resting loosely upon the upper the supporting plate and out,'of contacting relation with the plate, and an upper endof .thestand tube out of contacting relation with'the supporting plate and a depend 111g gauge tube extending downwardly through thestand tube into a liquid contained .inthe'bulb for containing fluid.

ing a supporting plate, a lower barometer section embodying a bulb for containing fluid anda vertical stand tube, rigidly supported upon the plate out of contact therewith, and an upper barometerisection'. embodying a bulb for. containing air resting loosely upon the upper end of the stand tube and a gauge tube extending downwardly through the stand tube in coaxial relation thereto.

JOHN L. BAUKUS.

1 15 6. A 'device'of the class described compris- 

